It is possible to prevent this problem by installing a lift pump that provides better filtration for air and debris. Another thing that owners have noticed is the TMAP sensor getting caked with soot and causing other issues. It is well known for the injector connection for the #4 injector to fail and put the L5P into limp mode with an engine code of P0204. This was in-efficient and often caused problems on trucks with any sort of performance modifications. None of the Duramax engines are exactly duds. AutoMeter 5323 OBD-II Signal Splitter Adapter AM-5323 2.00 Auto Meter 5323. Dealership says it is covered under the #16-NA-32 Bulletin on common engine noises Duramax 6.6L, but this is not the ticking or cycling that I have heard on my . How much horsepower does the L5P engine have? It is regarded as GMs top Duramax after emissions. With a simple and affordable shift kit, the six-speed can be readily changed to increase its holding power to about 500 horsepower; the Allison from 2011 and after is considerably more powerful. Check the wiring and the connectors for any damages or if there are any loose connections. A faulty MAP (manifold absolute pressure) sensor can cause a difference in the engines air-fuel ratio. Instead, the LL7 had issues with overheating when towing heavy loads or driving in hot temperatures. Save my name, email, and website in this browser for the next time I comment. When you go to buy a used LB7, its important to find out if it still has the original factory injectors. Spray the cleaner into the sensors port then shake the sensor to remove any residual. ], Check Fuel Cap Honda Accord |Causes & Fix, Typical Car Accident Settlement Amounts-How to Calculate, 4 Signs That Your Clutch Flywheel Is Failing (With Repair Costs). Even though this is not an issue, it is still worth mentioning. Unfortunately, the Allison 1000 transmission is the largest obstacle to huge power. Mechanically, the LMM Duramax was almost exactly the same as the LBZ, but it included emissions control parts that the LBZ didnt have. Such upgrades may include hydraulic upgrades, transmission cooler, friction materials, and multi-disc converter. In general, the L5P Duramax is one of the best engines with incredible horsepower and towing capacity. A: The L5P is regarded as the most dependable Duramax produced after emissions. May 8, 2020 Dealer trades can easily have 300 miles on them, but that is not relevant to his issue. Other significant problems with the LB7 included: The LLY Duramax engine was only in production for a short time. How Long Should You Replace Fuel Injectors? 11 Common 6.6 LLY Duramax Problems And How To Fix Them - Diesel Resource . The engine is a tuners dream on its own. Banks Derringer Diesel Tuner 2020-2023 GM 2500 L5P 6.6L Duramax EO #: D-161-136 (for parts: 66582, 66592, 66792, 66682, 66692, 66793) . If youre trying to choose one over the other, it largely depends on what you need. Free Domestic Ground Shipping On Orders Above $100, Ground And Free Shipping Orders Placed Before 2PM PST Monday Friday Will Ship Out Same Day Overnight And 2 Day Orders Placed Before 3PM PST Monday Friday Will Ship Out Same Day, Proven, Tested Diesel Parts For Long-Term Durability. [ymm_selector template=horizontal_selector.php]. ), LML Duramax Problems (4 Major Issues Solved), Chevy LMM Duramax Problems (4 Issues Solved), 6.6 Duramax Diesel Problems (6 Major Issues Solved), Peakperformanceproject.com, All Rights Reserved, Rough idling and Low RPMS: Clogged and bad fuel injectors will lead to the wrong amount of fuel being sprayed in the cylinders and at the wrong time. www.peakperformanceproject.com is a participant in the Amazon affiliate program,As an Amazon Associate, we earn from the qualifying purchases of recommended product links. Why EGT is Important. Diesel oxidation catalytic (DOC this is its own pipe in the exhaust), Diesel exhaust fluid (DEF, used in conjunction with SCR), Power gains in excess of 100whp when turned (gains mostly come from tune), Increased turbo efficiency and reliability, Improved reliability, decreased maintenance costs, Its technically illegal and can come with big fines, Installs must be DIYd (shops wont install these anymore), Needs to be used in conjunction with a DPF capable tuner. For instance, the latest Alisson 10L 1000 transmission is one of the most well-engineered, robust, and dynamic transmissions that can be found in the 2020 DuraMax trucks. As mentioned above, excessive mods to get more than 600 horsepower can cause the LBZ pistons to crack. 10 Things to Check After you Replace a Camshaft Sensor, Does Adsjusting Your Car Height Void Insurance? [Answered! Confirm on the maintenance schedule for more information on how regularly you should care for the L5P Duramax engine. Although its not the most frequent issue, the #4 fuel injector in particular is infamous for having issues. May 25, 2008 2,002 237 . When you think about it, the problems mentioned in this piece are actually just a matter of fine detail. ], 5 Best Japanese Sports Cars [With Secret American List! One of GMs top engines, the L5P is a dependable engine. Find out how GM bumped up the HD'. Just install a MAP sensor spacer and use an electrical cleaner to remove the soot. With 445HP and 910 pound feet of torque, the L5P Duramax, a variant of the V8 diesel Duramax that was released in 2017, is GMs most potent pickup truck engine. There is a fuel injector for each cylinder in the engine and their job is to spray fuel into those cylinders. Lets investigate each of these concerns individually now. Tags chevy L5P Duramax L5P Duramax Problems, Since the Buick Enclave is a high-end crossover SUV, purchasing used rather than new can , Your email address will not be published. The strongest Duramax gearbox to date is the 6-speed automatic Allison 1000 on the L5P. In actuality, there isnt much to be unhappy with in terms of this specific engine. After drying, reinstall the MAP sensor to its appropriate location. Finding 3 problems with the L5P proved challenging. LML Duramax Problems [Youll Be Stuck If This Happens! Today, after a 30 minute interstate drive, I reached my destination and immediately after putting my truck in park, a poor DEF quality warning came on. But for this to be achieved then you should perform the recommended routine maintenance. You can also check this YouTube video link for a more descriptive troubleshooting process. It can take you up to 7 hours or more to fix the injection pump especially if it is your first time. The MAP sensor also helps determine when ignition should occur within the current operating conditions. Many people think their 2017 - 2020 L5P Duramax needs a bigger intake and bigger exhaust to make power. If you want an engine without those, youre still likely to choose the LBZ. While these engines are still relatively new, they seem to be extremely reliable so far with very few "common" problems that haven't been solved or addressed. Upgrade your 2020 L5P Duramax - Diesel World Brush it off or clean it with the electric part cleaner. Denso G4S Gen 3 Injectors. 2020 6.6L Duramax: Bolt-On Upgrades - Diesel World GM had fixed the injector problems by the time this engine came out. It also has a towing capacity of up to 36,000 depending on the truck model and year. MESSAGE ME ON INSTAGRAM @Denny_Diesel OR EMAIL dennydiesel@yahoo.comFollow Me On INSTAGRAM! On the previous models It was more often an injector but would need to shut it off to know for sure Pure Diesel Active member Apr 22, 2008 790 31 28 So. If it does, you know a replacement job is in your future. L5P Duramax Problems for Vehicle years 2017, 2018, 2019, 2020, and 2021, Often Asked Questions on L5P Duramax Problems. Normally, replacing the fuel injection pump can cost you around $350 and $850. The engine itself is quite competent and dependable because to the addition of a 2 fuel injection pump and other modifications to the block, pistons, and other internals. Additionally, in turbocharged engines, the MAP sensor plays a crucial role in timing the ignition. Put on rubber gloves and safety glasses. Failure of Fuel Injector-4 What shall we learn in this article? Turn off the engine and disconnect the MAP sensor. Duramaxdiesels.com was founded in 2006 and created a site which houses some of . The L5Ps MAP sensor has to be cleaned frequently. A fault MAP sensor can also affect the fuel economy as well as the engine performance and this is the case in the L5P Duramax. If you continue to use this site we will assume that you are happy with it. The only real issue is something that GM simply didnt install: a factory lift pump. That was one area of problems, but the other area was with the pistons. It was nearly identical to the LB7 engine and emissions control parts continued to be absent. Q) Which Turbo does the L5P Duramax have? Upgrades like a better trans cooler, a multi-disc torque converter, hydraulic improvements, and improved friction materials may be required for those with extensive modifications and significant foot traffic in order to prevent exorbitant transmission replacement costs. This will tell you a lot about whether the MAP sensor is damaged or where the problem might be. Also Read: P0496 Chevy Cruze Fixed! . Moreover, the car will go into a limp mode whereby you will get engine codes such as P0204, P0300, or P020D. In this article, we will examine these L5P Duramax issues you should watch out for as well as some potential solutions. Below are a few maintenance tips to help your L5P Duramax last longer: Firstly, Duramax trucks never had a lift pump even after when the Silverado 6.6l Duramax diesel V8 was introduced in 2001. L5P: - Def low warning.not true | Diesel Place ], Can a Bad Catalytic Converter Cause Car to Shut OFF? Display of such IP along with the related product information does not imply AutoLawNow.com s partnership with the owner of the Intellectual Property or issuer/manufacturer of such products. What are the L5P Duramaxs most frequent problems? However, like any other engine, this too has encountered a few problems that were reported by its owners over the years. Next, check whether there is debris or dirt inside the sensor vacuum hose and the intake manifold. 1. With improvements and upgrades done to such parts as the block, pistons, and fuel injection, then the engine can be highly efficient. The LMM had six, which meant that two streams of fuel came out in opposing directions over the piston wrist pin. Also Read: Can ABS Sensor Cause Transmission Problems [Quick Guide & Info]. If properly cared for, you should expect the L5P Duramax to last over 300,000 without any need for big repairs. Don't Delete Your 2017-2020 L5P Duramax DPF!!! Common Duramax Diesel Problems, Troubleshooting, and Solutions Not sure how or why but they replaced it and did 2 forced regenerations cleaned the sensors and it seems to be okay now after putting around 100km on it. Use MAF Sensor Cleaner on a regular basis to maintain the MAP sensor. @De. Other signs include: You can fix this issue by replacing the stock connector with a gold-plated connector or an LBZ connector. The L5P is largely considered to be the best post-emissions Duramax engine. AutoMeter 5323 OBD-II Signal Splitter Adapter $ 43.47 2050-01-01. With that massive front-end and the bold, in-your-face grille and headlight combo it's either a love it or hate it appearance. No matter what Duramax or Allison model you drive, if you have a lot of modifications and a heavy right foot, you probably need to spend money on an improved Allison so you can put your foot down without hesitation. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts.
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